EP1702409A1 - Sicherheitsschalter zum überwachen einer schliessposition zweier relativ zueinander beweglicher teile - Google Patents
Sicherheitsschalter zum überwachen einer schliessposition zweier relativ zueinander beweglicher teileInfo
- Publication number
- EP1702409A1 EP1702409A1 EP04803828A EP04803828A EP1702409A1 EP 1702409 A1 EP1702409 A1 EP 1702409A1 EP 04803828 A EP04803828 A EP 04803828A EP 04803828 A EP04803828 A EP 04803828A EP 1702409 A1 EP1702409 A1 EP 1702409A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- antenna
- actuator
- safety switch
- switch according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 5
- 238000013459 approach Methods 0.000 description 24
- 229910000859 α-Fe Inorganic materials 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
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- 238000012360 testing method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
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- 230000003466 anti-cipated effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/204—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
- G01D5/2066—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by movement of a single coil with respect to a single other coil
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9502—Measures for increasing reliability
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/952—Proximity switches using a magnetic detector using inductive coils
- H03K17/9525—Proximity switches using a magnetic detector using inductive coils controlled by an oscillatory signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9505—Constructional details
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/945—Proximity switches
- H03K2217/95—Proximity switches using a magnetic detector
- H03K2217/958—Proximity switches using a magnetic detector involving transponders
Definitions
- Safety switch for monitoring a closed position of two parts that are movable relative to one another
- the present invention relates to a safety switch for monitoring a closed position of two parts that are movable relative to one another, in particular for monitoring a protective door on an automated system, with an actuator and with a sensor, which can be fixed to each of the parts, the actuator being an actuator antenna and Sensor have a sensor antenna, via which the actuator and the sensor are coupled in a transformer-like manner, in particular transponder-like, in the closed position of the parts.
- Such a safety switch is sold by the company Euchner GmbH & Co. KG, 70771 Leinfelden-Echterdingen, Germany under the product name CES.
- Safety considerations to protect against accidents play an increasingly important role in the planning and construction of automated systems.
- Various protective measures are used to protect the systems, in particular emergency stop switches, light barriers or so-called protective doors, which prevent access to a dangerous part of the system in connection with protective fences.
- the opening of the protective door must be recognized in a fail-safe manner during operation of the system, since the opened protective door poses a security risk.
- the relevant European standard EN 954-1 and comparable and related regulations e.g. the new IEC EN 61508 or the derived prEN ISO 13849-1) define the requirements for the protective measures.
- the present invention accordingly relates to safety switches that are provided and designed for the stated purpose and therefore meet at least Category 3 of EN 954-1 or comparable safety requirements.
- Another generic safety switch is offered by K. A. Schmersal GmbH, 42232 Wuppertal, Germany under the designation BZ 16.
- This known safety switch has the disadvantage that for every approach direction, i.e. Approach direction from actuator to sensor, a separate switch variant must be used. If, for example, a safety switch is required for an application in which the actuator is not to be brought up to the sensor from the front but from above, another variant of the known safety switch is required. In individual cases, this not only complicates the installation of the safety switch, but also leads to increased storage costs, both on the part of the manufacturer and on the part of the user, since it is desirable for a trouble-free production process to always have a certain number of spare parts of important components available to have.
- EP 0 968 567 B1 also discloses a basic structure of a transponder-based safety switch for the present application. However, the problem described here is not considered.
- the sensor antenna has a magnetic directional characteristic which, based on the sensor antenna, enables a transformer coupling to the actuator in at least two mutually perpendicular spatial directions.
- the directional characteristic of the sensor antenna is designed in the at least two mutually perpendicular spatial directions so that the perpendicular approach directions each ensure a defined switching distance.
- the switching distance is the few (maximum) distance between the sensor and the actuator, from which the safety switch detects the closed position of the parts that move towards each other.
- the solution according to the invention uses a sensor antenna for the application area of interest here, which has more than just one defined preferred direction of use.
- sensor antennas are used in all known generic safety switches that have a directional characteristic with only one usable preferred direction. Accordingly, it is necessary with the generic safety switches either to provide different switch variants or to turn the sensor head in the desired direction.
- the present solution uses a sensor antenna, which in the simplest case is omnidirectional, which can in principle be approached from any spatial direction.
- the invention is based, inter alia, on the knowledge that a directional characteristic with only one preferred direction is not required to ensure the required security.
- the different approach directions open up the possibility of manipulation. However, these can be reliably intercepted in another way, especially when using individually coded transponders.
- a sensor antenna with only one preferred direction is also not required to ensure a defined switching distance. As has been shown in practical tests by the applicant, defined switching distances can also be realized from several approach directions with the solution according to the invention.
- the new safety switch makes it easy to change the installation position of the sensor without having to re-assemble or change mechanical parts. Accordingly, the new safety switch can be used flexibly in different directions. The storage costs are reduced without additional assembly effort. The task mentioned at the outset is thus completely achieved.
- the new solution has the further advantage that the housing construction for the safety switch is simplified, especially when dirt and / or splash-proof housings are desired.
- the sensor antenna has an essentially omnidirectional directional characteristic.
- the sensor antenna is therefore not only fixed to two directions of approach, but rather enables the actuator to be approached from numerous spatial directions.
- the omnidirectional directional characteristic can be limited to one level, thus enabling starting from the front, right, left and possibly from the rear.
- the omnidirectional directional characteristic is spatial, ie the new sensor antenna also enables starting from above or below.
- the new sensor antenna thus has a spherical directional characteristic, and it is known to the relevant experts that an exact spherical shape (without dips or "dents") can hardly be achieved in practice.
- An omni-directional directional characteristic in the sense of the present invention is therefore also then given if the actuator starts moving to the sensor different spatial directions is possible.
- this embodiment does not rule out that individual spatial directions are excluded for other reasons, for example because of mechanical disabilities caused by supply cables.
- the preferred embodiment leads to a particularly great flexibility of the new safety switch in relation to the mounting position.
- this configuration has the advantage that the sensor antenna can be manufactured with greater tolerances and installed in the safety switch, which reduces the manufacturing costs.
- the sensor antenna contains a multiplicity of partial antennas with differently oriented directional characteristics.
- the sensor antenna contains, for example, two sub-antennas arranged perpendicular to one another, which are “responsible” for one or two approach directions This configuration simplifies the implementation of the same switching distances in different approach directions.
- the sensor antenna contains an air coil.
- the sensor antenna contains a coil which is arranged flat on a component carrier of the sensor. It is particularly preferred if the coil is designed as a conductor track on the component carrier.
- This configuration enables the new safety switch to have a particularly small and flat design. Surprisingly, it has been shown that this reduction in size is possible without any significant restrictions in terms of the range (switching distance) of the new safety switch. On the contrary, the new flat design enables the new safety switch to be installed more densely on door bars or the like, so that the effective range can even be increased. In addition, this configuration enables a cost reduction, since housing parts can be smaller. It is particularly cost-effective if the coil is implemented as a conductor track on the component carrier, because it enables particularly efficient production.
- the directional characteristic has a stronger first and a weaker second preferred direction for the transformer coupling and the sensor antenna is arranged in an antenna housing with housing walls, with a distance between the sensor antenna and housing wall being greater in the first preferred direction than in the second preferred direction.
- the sensor antenna is arranged at a greater distance from the housing wall in the first, stronger preferred direction than in the second, weaker preferred direction. Due to the larger distance and the field strength decreasing with the distance, different switching distances in the different approach directions can be easily and elegantly compensated. In this configuration, the new safety switch therefore has a more uniform response behavior in the different approach directions.
- the transmitting antenna is arranged perpendicular to the first preferred direction at the same distance from at least two housing walls.
- This embodiment is particularly advantageous if an air coil is used as the transmitting antenna, since its field distribution perpendicular to the longitudinal axis of the coil is largely rotationally symmetrical. The same distances to the housing walls perpendicular to the first preferred direction make the response behavior of the new safety switch even more uniform.
- the new safety switch has a sensor housing with one mounting side, with see sensor antenna and mounting side a field insulation is arranged.
- an electrically and / or magnetically conductive plate for example a copper, aluminum, iron, soft iron and / or ferrite plate, is used as field insulation.
- a distance between the sensor antenna and the mounting side is approximately 5 mm or more.
- This configuration also helps to minimize the influence of a metallic mounting surface on the safety switch.
- the specified distance of about 5 mm between the sensor antenna and the mounting side, measured as the clear distance between the outside of the antenna and the outside of the housing intended for mounting, has changed in practical tests. proven sufficient for reliable operation. Larger distances further reduce the influence of the installation site. In the case of significantly smaller distances, the installation location has too great an influence on the switching distances for safety-related applications.
- the actuator antenna has a first orientation in the transformer coupling in a first of the at least two vertical spatial directions and a second orientation in the transformer coupling in a second of the at least two vertical spatial directions, the first and the second orientation being about 90 ° are twisted to each other.
- the actuator (with its actuator antenna) is rotated depending on the desired approach direction.
- the preferred embodiment has mechanical advantages. In order to ensure a defined switching distance, it is namely desirable to use relatively large coil diameters of, for example, 28 mm on the side of the actuator antenna.
- the actuator antenna in the antenna axis can be relatively flat, so that the actuator in the antenna axis is much shorter than to the side.
- the preferred embodiment has the advantage that the actuator can be approached equally close to the sensor regardless of the approach direction. This simplifies assembly and simplifies the provision of defined switching distances. It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own without departing from the scope of the present invention.
- an automated system with the new safety switch is designated in its entirety with the reference number 10.
- the safety switch is used for monitoring here the closed position of a protective door 12, which in turn is provided for securing the system.
- the system is shown here by way of example as a robot 14.
- the area of application of the new safety switch is, however, not limited to this specific example.
- the new safety switch can be used to safely monitor any (closed) positions of two parts that are movable relative to each other. This also includes, for example, monitoring a piston position relative to a piston cylinder or another piston, the term “closed position” in this case meaning that the piston is in the area of the other object.
- the safety switch includes an actuator 16 and a sensor 18.
- the actuator 16 is attached to the protective door 12 here.
- the sensor 18 is attached to a wall 20 (or a frame for the protective door 12, not shown here).
- the actuator 16 In the closed state of the protective door 12 (not shown here), the actuator 16 is in spatial proximity to the sensor 18, which leads to a transponder-like coupling between the actuator 16 and the sensor 18 in the manner explained in more detail below.
- the protective door 12 is opened, the actuator 16 is removed from the sensor 18, which has the consequence that the transponder-like coupling “breaks off”.
- the sensor 18 then generates a switching signal which leads to the robot 14 being switched off.
- the sensor 18 is connected to a safety switching device 22 via two lines.
- a first line 24 leads from the safety switching device 22 to the sensor 18.
- the safety switching device 22 can transmit test signals to the sensor 18 via this line in order to check its functional reliability.
- about the second line 26 receives the safety switching device 22 a switching signal generated by the sensor 18, which signals the closed state of the protective door 12.
- a preferred type of monitoring of the sensor by the safety switching device 22 is described in the German patent application with the file number 103 34 653.8, the contents of which are hereby fully referred to.
- the sensor 18 can also be constructed in a different manner in a fail-safe manner in accordance with the relevant regulations (at least category 3 of EN 954-1 or comparable safety requirements).
- An implementation with a two-channel evaluation structure is described, for example, in EP 0 968 567 B1 mentioned at the beginning.
- the safety switching device 22 here is preferably a device that meets category 4 of the European standard EN 954-1 or a comparable safety standard.
- this is a safety switching device of the type PN0Z®elog from the applicant of the present invention.
- the sensor 18 could also be connected to a programmable safety controller, such as that is marketed by the present applicant under the name PSS®.
- the sensor 18 of the safety switch 36 has a sensor housing 38 with housing walls 40, 42, 44 (cf. FIG. 3).
- the sensor housing is divided into two here.
- the sensor antenna 46 is arranged, which is designed here as an air coil.
- the air coil 46 is shown schematically here in a section parallel to the longitudinal axis of the coil.
- An embodiment of the sensor 18 includes that a field insulation 52 is arranged below the sensor antenna 46 (in the illustration in FIG. 2), ie between the sensor antenna 46 and a housing wall provided for mounting the sensor 18.
- the field insulation can also be the corresponding housing wall itself.
- the field insulation is an iron plate. In other exemplary embodiments, it is a plate made of soft iron, ferrite, copper, aluminum or the like. It goes without saying that the magnetic field lines 50 in the area below the sensor 18 then take a different course and, in this respect, there is no longer any complete rotational symmetry.
- the field insulation 52 can be omitted in simpler exemplary embodiments.
- the sensor antenna 46 is then preferably arranged at a distance of approximately 5 mm or more from the outside of the housing with which the sensor 18 is mounted. This distance is denoted by d 3 in FIG. 3 (however, there with reference to the side housing wall 44).
- the actuator 16 has, in a manner known per se, an integrated circuit 54 which is connected to an actuator antenna 56.
- the actuator antenna 56 is also shown here as an air coil, but can also be different in individual cases Own design.
- a coding is stored in the circuit 54, which is represented here by symbolic lines 58.
- the coding 58 is individually assigned to the actuator 16, so that the sensor 18 can identify the actuator 16 on the basis of the coding 58.
- the actuator 16 shown here does not have its own energy supply. Rather, it receives the energy for supplying the integrated circuit 54 from the sensor 18 if the two antennas 46, 56 have a sufficiently strong transformer coupling. Such is the case when the field lines 50 of the magnetic field generated by the sensor antenna 46 with an orthogonal component pass through the cross-sectional area of the actuator antenna 56, as is shown for the actuator 16 in FIG. 2.
- the circuit 54 is then excited and modulates the existing field with the internal coding 58, which can be detected and evaluated by the circuit 48 in the sensor 18.
- the transformer coupling depends on the distance between the actuator 16 and the sensor 18. If the distance falls below a defined switching distance, the sensor 18 can read the actuator 16. Communication between the two is not possible outside the appropriate distance.
- the corresponding switching distance is indicated symbolically in FIG. 2 at reference number 60.
- the sensor antenna 46 has a largely omnidirectional directional characteristic 62 (cf. FIG. 3). Therefore, a transformer coupling between actuators ger 16 and sensor 18 not only possible here if the actuator 16 is approached from the front, ie in the direction of arrow 64, to the sensor 18. Rather, a coupling is also possible when approaching from the approach directions laterally to the actuator 18 (arrows 66, 68). The reason for this is the field line distribution 50 indicated in FIG. 2. As shown, vertical field line components also occur through the cross-sectional area of the actuator antenna 56 when the actuator 16 is located at the positions labeled 16 'or 16''. The safety switch 36 thus enables directions of approach perpendicular to one another between the actuator 16 and the sensor 18.
- the orientation of the actuator is currently preferred for the lateral approach direction, which is shown at reference number 16 ′′, i.e. here the actuator is rotated by 90 ° with respect to the approach direction 64.
- the actuator can be moved close to the sensor regardless of the approach direction.
- a large coil diameter of the actuator antenna 56 can mechanically impede a close approach.
- orientation 16 ' is also possible.
- FIG. 3 shows the directional characteristic 62 of the sensor antenna 46 in a simplified manner. This is, in a manner known per se, the spatial course of the same field strength for a magnetic field component, which here lies parallel to the starting direction 64 (FIG. 2) of the actuator 16. This field line component is decisive when the actuator 16 is approached in the orientation to the sensor 18 which corresponds to the positions at the reference numbers 16 and 16 'in FIG. 2.
- the actuator is, however, approximately 90 ° twisted orientation (reference numeral 16 '') on 'the sensor 18 in a to the perpendicular field components are essential, which would lead to a different appearance of the directional characteristic (specifically, in the manner of a sesunaigen cloverleaf the leaves of which lie approximately diagonally to the longitudinal axis of the coil 46). Therefore, depending on the orientation of the actuator 16, 16 ′′, different profiles of the directional characteristic and thus different switching distances can result. However, the basic principle of the "non-directional" directional characteristic remains unaffected.
- the air coil 46 leads to different switching distances between the actuator 16 and the sensor 18 depending on the direction of approach.
- the air coil 46 is arranged here at different distances d x and d 2 from the housing walls 40 and 42, 44, respectively. Specifically, the air coil 46 is at the same, smaller distance d 2 from the two side housing walls 42, 44, while it is at a greater distance d x from the front housing wall 40.
- the switching distances when moving off are adjusted to one another in the two preferred directions 72, 74, as is indicated in FIG. 3 by means of the switching distances 60a, 60b.
- the directional characteristic 82 is approximately the same in the mutually perpendicular spatial directions, it being known to the relevant experts that it can nevertheless have indentations 84 in some places.
- This approximately uniform formation of the directional characteristic is achieved here by using a plurality of partial antennas 86, 88.
- two air coils 86, 88 are arranged crosswise to one another and interconnected in such a way that their individual directional characteristics overlap to form the more uniform overall characteristic 82. It is easy to see that the switching distances in the different approach directions 64, 66 can be further adjusted using the directional characteristic 82.
- the sensor 18 of the safety switch 90 has a sensor antenna 92 in the form of a flat coil. This can be a coil made of wound wire or the like. In the preferred exemplary embodiment, however, the coil 92 is designed as a printed or etched conductor track on a component carrier. Irrespective of this, the coil 92 here has a ferrite core 94 arranged in the center. The ferrite core concentrates the magnetic field lines 50, but in contrast to the ferrite pots of the generic type, it does not ensure a single operating or preferred direction. It goes without saying that such a ferrite core can also be used in the previous exemplary embodiments.
- the coil 92 is arranged here on a component carrier 98 together with other components 96 of the sensor.
- An IC which can be, for example, an ASIC, is shown here as another component, by way of example, but not by way of limitation.
- the actuator antenna 56 is also designed as a flat (air) coil. As shown in FIGS. 5 and 6, the actuator antenna 56 can be coupled to the sensor antenna 92 from several positions due to the protruding field line distribution. This enables the sensor to be approached from different directions without having to remount the sensor or the sensor antenna. On the other hand, the lying arrangement of the antennas results in a very flat design, which enables a small-sized assembly, in particular in the approach position shown in FIG. 6.
- the present invention has been illustrated here on the basis of preferred exemplary embodiments in which a transponder (tag) known per se is used on the part of the actuator 16.
- the transformer coupling between actuator 16 and sensor 18, more precisely between actuator antenna 56 and sensor antenna 46, must be strong enough to excite the transponder.
- this state is referred to as a transponder-like coupling.
- the principle of the invention can, however, also be applied to safety switches which are not based on the evaluation of a transponder.
- the general application therefore also includes transformer couplings between actuator 16 and sensor 18, which do not require a transponder.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410002438 DE102004002438A1 (de) | 2004-01-09 | 2004-01-09 | Sicherheitsschalter zum Überwachen einer Schließposition zweier relativ zueinander beweglicher Teile |
DE102004039975 | 2004-08-12 | ||
PCT/EP2004/014200 WO2005067145A1 (de) | 2004-01-09 | 2004-12-14 | Sicherheitsschalter zum überwachen einer schliessposition zweier relativ zueinander beweglicher teile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1702409A1 true EP1702409A1 (de) | 2006-09-20 |
EP1702409B1 EP1702409B1 (de) | 2011-07-20 |
Family
ID=34751383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04803828A Active EP1702409B1 (de) | 2004-01-09 | 2004-12-14 | Sicherheitsschalter zum überwachen einer schliessposition zweier relativ zueinander beweglicher teile |
Country Status (6)
Country | Link |
---|---|
US (1) | US7746233B2 (de) |
EP (1) | EP1702409B1 (de) |
JP (1) | JP4444972B2 (de) |
AT (1) | ATE517467T1 (de) |
HK (1) | HK1095217A1 (de) |
WO (1) | WO2005067145A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10467441B2 (en) | 2014-10-13 | 2019-11-05 | Sick Ag | Method of recognizing whether a transponder of an RFID system is present in a boundary region, RFID system and safety switch |
Families Citing this family (12)
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DE10348884A1 (de) * | 2003-10-14 | 2005-05-25 | Pilz Gmbh & Co. Kg | Sicherheitsschalter, insbesondere Not-Aus-Schalter, zum sicheren Abschalten eines gefahrbringenden Gerätes |
US8294575B2 (en) * | 2009-11-02 | 2012-10-23 | Tockwell Automation Technologies, Inc. | Reteachable non-contact switching circuit |
US8456792B2 (en) * | 2010-02-05 | 2013-06-04 | Honeywell International Inc. | Secure non-contact switch |
US8699200B2 (en) * | 2010-02-05 | 2014-04-15 | Honeywell International Inc. | Secure non-contact switch |
US9035766B2 (en) * | 2010-07-07 | 2015-05-19 | Honeywell International Inc. | System and method of determining gas detector information and status via RFID tags |
EP2461342B1 (de) * | 2010-12-06 | 2015-01-28 | Siemens Aktiengesellschaft | Fehlersicheres Schaltmodul |
US10210682B2 (en) * | 2013-09-05 | 2019-02-19 | Rockwell Automation Technologies, Inc. | Systems and methods for improving a sensing ability of an interlock switch system |
DE202014104856U1 (de) | 2014-10-13 | 2016-01-15 | Sick Ag | Transponder für ein RFID-System |
FR3057259B1 (fr) * | 2016-10-12 | 2018-10-05 | Sidel Participations | Procede de controle d'une installation de manutention avec securisation des acces pour la maintenance |
JP6933166B2 (ja) * | 2018-03-13 | 2021-09-08 | オムロン株式会社 | センサ |
IT201900011697A1 (it) * | 2019-07-12 | 2021-01-12 | Pizzato Elettrica Srl | Interruttore di sicurezza con pulsantiera |
DE102019127614B4 (de) * | 2019-10-14 | 2022-06-15 | Sick Ag | Sicherheitssystem mit einem Sicherheitsschalter |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
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DE7927546U1 (de) * | 1979-09-28 | 1980-02-14 | Honeywell Gmbh, 6050 Offenbach | Beruehrungsloser elektronischer schalter |
DE3045848A1 (de) * | 1980-12-05 | 1982-07-08 | Gebhard Balluff, Fabrik Feinmechanischer Erzeugnisse, 7303 Neuhausen | Naehrungsschalter |
DE3203520A1 (de) | 1982-02-03 | 1983-08-04 | Siemens AG, 1000 Berlin und 8000 München | Richtungsempfindlicher sensor |
JPS59186422A (ja) * | 1983-04-07 | 1984-10-23 | Omron Tateisi Electronics Co | 近接スイツチ |
US4773094A (en) * | 1985-12-23 | 1988-09-20 | Dolby Ray Milton | Apparatus and method for calibrating recording and transmission systems |
DE3616389A1 (de) * | 1986-05-15 | 1987-11-19 | Turck Werner Kg | Beruehrungslos wirkender naeherungsschalter |
DE19711588A1 (de) | 1997-03-20 | 1998-09-24 | Euchner Gmbh & Co | Sicherheitsschalter |
DE10055404A1 (de) | 2000-03-09 | 2001-09-13 | Abb Research Ltd | Anordnung zur Erzeugung elektrischer Energie aus einem Magnetfeld |
AU4415201A (en) * | 2000-03-09 | 2001-09-17 | Abb Research Ltd | System for generating electric energy from a magnetic field |
DE10048290C5 (de) * | 2000-09-29 | 2005-12-08 | Balluff Gmbh | Induktiver Sensor |
DE10222186C1 (de) * | 2002-05-18 | 2003-10-09 | Schmersal K A Gmbh & Co | Sicherheitsschalter |
DE10334653B4 (de) | 2003-07-21 | 2005-06-09 | Pilz Gmbh & Co. Kg | Verfahren und Vorrichtung zum sicheren Überwachen einer Schließposition zweier relativ zueinander beweglicher Teile |
-
2004
- 2004-12-14 JP JP2006548146A patent/JP4444972B2/ja active Active
- 2004-12-14 EP EP04803828A patent/EP1702409B1/de active Active
- 2004-12-14 WO PCT/EP2004/014200 patent/WO2005067145A1/de active Application Filing
- 2004-12-14 AT AT04803828T patent/ATE517467T1/de active
-
2006
- 2006-07-06 US US11/481,991 patent/US7746233B2/en not_active Expired - Fee Related
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2007
- 2007-03-12 HK HK07102653.7A patent/HK1095217A1/xx not_active IP Right Cessation
Non-Patent Citations (1)
Title |
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See references of WO2005067145A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10467441B2 (en) | 2014-10-13 | 2019-11-05 | Sick Ag | Method of recognizing whether a transponder of an RFID system is present in a boundary region, RFID system and safety switch |
Also Published As
Publication number | Publication date |
---|---|
JP2007518320A (ja) | 2007-07-05 |
HK1095217A1 (en) | 2007-04-27 |
US20070013236A1 (en) | 2007-01-18 |
ATE517467T1 (de) | 2011-08-15 |
WO2005067145A1 (de) | 2005-07-21 |
US7746233B2 (en) | 2010-06-29 |
EP1702409B1 (de) | 2011-07-20 |
JP4444972B2 (ja) | 2010-03-31 |
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